Soil compaction and degradation due to improper tillage are problems involving significant natural and economic damages. On compacted soils, suitable cultivation can be implemented only with higher energy and traction force input. In our study, the effect of a soil conditioner (Neosol) was examined on the penetration resistance of the soil and the traction power demand for ploughing in the experiment set up in the East-Slovak Plain in 2017 ‒ 2018 to justify several preliminary results showing that long-term soil conditioning results in enhanced root system, improved soil structure, cultivability, water- and salt regime. We found a positive effect of Neosol application with both investigated parameters and its long-term effect was also justified. The penetration resistance values of the soil of the untreated plot were 17 ‒ 23% higher, while the traction power demand values were 9 ‒ 32% lower in comparison with the Neosol treated plot in the first and the second year of the study, respectively. We assume the cumulative positive effect of soil conditioning on the physical soil properties in the study area, therefore the long-term application of Neosol is recommended for farms having similar soil properties.

The paper deals with the analysis of factors that influence the change in return on equity (ROE) in farms of individual V4 countries – in Slovakia, Poland, Hungary and the Czech Republic. DuPont analysis denotes the decomposition of the ROE indicator and is classified as a basic pyramid decomposition. The pyramid system captures the relationship between indicators, where one synthetic indicator (ROE) is broken down into analytical indicators through linkages. In the case of a multiplicative link between indicators, the functional and logarithmic method is used. The source of data is the Farm Accountancy Data Network for the period 2009–2017. Comparing the first and last year we can conclude that the ROE indicator decreased in farms of all V4 countries (in Slovakia by 155%, in Czech Republic by 133%, in Hungary by 52% and in Poland by 19%). The predominantly positive or negative impact on its development was mainly influenced by two indicators: return on assets and return on sales in all countries.

This scientific paper is based on the results of the research focused on the growing and processing of selected medicinal plants. Black chokeberry (Aronia melanocarpa) was included in the research because it is currently one of the most sought-after superfoods in Europe and throughout the world. Based on authentic data and literary sources, the model of economic efficiency was developed for assessment of the establishment and operation of the black chokeberry plantation in the Slovak Republic. The modelled plantation shall be spread over 10 hectares with an intensive method of cultivation (high soil quality, deep plowing, drip irrigation, fertilization with organic and inorganic fertilizer and mechanized fruit harvesting). This intensive cultivation method is characterized by higher yields in t/ha compared to an extensive cultivation method. The model is reviewed over a 12-year period. In this paper are presented three alternatives for processing total production. “Alternative A” represents the sale of the harvest to either the final consumer or the processor for further processing (fresh fruit). “Alternative B” represents the finalization of production in the form of apple–aronia juice (ratio 25% aronia–75% apple). “Alternative C” represents the finalization of production in the form of apple–aronia juice (ratio 50% aronia–50% apple).

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Under the 2014–2020 Common Agricultural Policy (CAP), the existence of two pillars is maintained and the link between them is strengthened. Regulation (EU) No. 1307/2013 provides a new system of direct payments. The system consisting of the decoupling of agricultural aid from production (partial decoupling) and the provision of general income support, which came into force in 2003, is being transformed into a system in which single farm payments are replaced by a seven-component system of multi-purpose payments: basic payment per hectare, greening component, additional payment to young farmers, redistributive payment, additional income support in areas with natural handicaps, coupled support, voluntary simplified scheme for small farmers. There are three measures related to greening payments: crop diversification: the farmer must grow at least two different crops; preservation of existing permanent grasslands; the creation of an area of ecological interest corresponding to at least 5% of the arable land of a holding over 15 hectares (excluding permanent grassland and perennial crops). The new CAP aims to increase agriculture‘s contribution to the EU‘s environmental and climate objectives, provide more focused support for smaller farmers and allow Member States greater flexibility to adapt measures to local conditions.